Sony has released a new software update for the latest Xperia series devices, Xperia Z2 and Xperia Z2 Tablet, which are now available for purchase. Earlier this month, a new firmware build 17.1.1.A.0.402 was certified for the Xperia Z2 and Xperia Z2 Tablet. According to Xperiablog, Sony has started rolling out 17.1.1.A.0.402 firmware based on Android 4.4.2 KitKat for Xperia Z2 and Xperia Z2 …